Results 111 to 120 of about 14,068 (210)

In Vivo Photoacoustic Imaging of Anterior Ocular Vasculature: A Random Sample Consensus Approach [PDF]

open access: yes, 2019
Visualizing ocular vasculature is important in clinical ophthalmology because ocular circulation abnormalities are early signs of ocular diseases. Photoacoustic microscopy (PAM) images the ocular vasculature without using exogenous contrast agents ...
Jeon, S.   +7 more
core   +1 more source

Apolipoprotein E ε4 homozygosity exacerbates retinal and cerebral microvascular dysfunction in Alzheimer's disease: A mediation analysis of vascular contributions to cognitive decline

open access: yesAlzheimer's &Dementia, Volume 21, Issue 12, December 2025.
Abstract INTRODUCTION Apolipoprotein E (APOE) ε4 is the strongest genetic risk factor for Alzheimer's disease (AD), with homozygous carriers (ε4/ε4) experiencing accelerated cognitive decline. While its role in amyloid and tau pathology is established, its impact on retinal and cerebral microvasculature remains underexplored. METHODS A total of 107 AD (
Yuntao Liu   +13 more
wiley   +1 more source

Acute zonal occult outer retinopathy: Is optical coherence tomography angiography useful?

open access: yesIndian Journal of Ophthalmology, 2018
A 44-year-old female presented with central vision loss and photopsia in both eyes since 2 months. Multimodal imaging, field defects, electroretinogram abnormalities, and spectral domain optical coherence tomography changes were all suggestive of acute ...
Anmol U Naik   +2 more
doaj   +1 more source

Advanced multi-contrast Jones matrix optical coherence tomography for Doppler and polarization sensitive imaging [PDF]

open access: yes, 2013
journal ...
Duan Lian   +8 more
core   +1 more source

Optical Coherent Tomography as a Potential Biomarker for Logopenic Variant Primary Progressive Aphasia: A Cross‐Sectional Prospective Study

open access: yesAlzheimer's &Dementia, Volume 21, Issue S2, December 2025.
Abstract Background The logopenic variant of Primary Progressive Aphasia (lvPPA) is a neurodegenerative disorder affecting primarily language functions. In 86% of lvPPA cases, the underlying pathology is amyloidopathy, as seen in Alzheimer's disease (AD).
Fei Wu   +4 more
wiley   +1 more source

Visible light optical coherence tomography angiography (vis-OCTA) facilitates local microvascular oximetry in the human retina

open access: yesBiomedical Optics Express, 2020
We report herein the first visible light optical coherence tomography angiography (vis-OCTA) for human retinal imaging. Compared to the existing vis-OCT systems, we devised a spectrometer with a narrower bandwidth to increase the spectral power density for OCTA imaging, while retaining the major spectral contrast in the blood.
Weiye Song   +6 more
openaire   +2 more sources

Guidelines on Optical Coherence Tomography Angiography Imaging: 2020 Focused Update

open access: yesOphthalmology and Therapy, 2020
Optical coherence tomography angiography (OCTA) has significantly expanded our knowledge of the ocular vasculature. In this review, we provide a discussion of the fundamental principles of OCTA and the application of this imaging modality to study the ...
Enrico Borrelli   +7 more
doaj   +1 more source

Distinctive Mechanisms and Patterns of Exudative Versus Tractional Intraretinal Cystoid Spaces as Seen With Multimodal Imaging. [PDF]

open access: yes, 2020
PurposeTo determine clear-cut distinctions between tractional and exudative intraretinal cystoid spaces subtypes.DesignRetrospective, multicenter, observational case series.MethodsA cohort of patients diagnosed with intraretinal cystoid spaces and imaged
Au, Adrian   +9 more
core  

Optical coherence tomography angiography–based analysis of intrinsic vasculature in juxtapapillary melanoma after ruthenium-106 plaque brachytherapy

open access: yesIndian Journal of Ophthalmology, 2019
In this case report, we demonstrate the use of optical coherence tomography angiography (OCTA) as a tool to evaluate intrinsic vasculature in a case of juxtapapillary melanoma which underwent ruthinium.106 plaque brachytherapy.
P Mahesh Shanmugam   +5 more
doaj   +1 more source

Multimodality Imaging Of Torpedo Maculopathy With Swept-Source, En Face Optical Coherence Tomography And Optical Coherence Tomography Angiography. [PDF]

open access: yes, 2016
PURPOSE: Multimodality image analysis of two cases of torpedo maculopathy. METHODS: Imaging with fundus photography, autofluorescence (AF), swept-source optical coherence tomography (OCT), en face OCT, and OCT angiography.
Keane, PA   +3 more
core  

Home - About - Disclaimer - Privacy